Re: [Elecraft] Wall Wart for KX3

[Lynn W. Taylor, WB6UUT]

The KX33 is 4 amps, and low RFI.  $59 is a reasonable price.  Mine works 
great.


The one from Digikey is 2.66 amps, and doesn't claim to be RF-quiet. It 
is less expensive and a little smaller.


I don't think I'd want to operate at full power with the Triad supply.

73 -- Lynn


On 6/28/2016 5:35 AM, John Flynn wrote:

Maybe this one?

http://www.digikey.com/product-search/en?keywords=237-1445-nd

73,

John K4ARQ

On Sat, Jun 25, 2016 at 11:22 PM, Lynn W. Taylor, WB6UUT 
> wrote:


I've got one.  Works well.


On 6/25/2016 7:57 PM, Phil Wheeler wrote:

This one
https://proaudioeng.com/products/pae-kx33-low-rfi-ac-power-supply/

73, Phil W7OX

On 6/25/16 6:59 PM, johnpierce wrote:

A person recently provided a link to a clean Wall Wart
power supply he
bought for his KX3.  I have searched for it and cannot
find it. Could
someone please repost the link?


John Pierce


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net


This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to gio.fl...@gmail.com 




--
John Flynn
Tallahassee, Florida
USA



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] Wall Wart for KX3

[John Flynn]

Maybe this one?

http://www.digikey.com/product-search/en?keywords=237-1445-nd

73,

John K4ARQ

On Sat, Jun 25, 2016 at 11:22 PM, Lynn W. Taylor, WB6UUT <
k...@coldrockshotbrooms.com> wrote:

> I've got one.  Works well.
>
>
> On 6/25/2016 7:57 PM, Phil Wheeler wrote:
>
>> This one
>> https://proaudioeng.com/products/pae-kx33-low-rfi-ac-power-supply/
>>
>> 73, Phil W7OX
>>
>> On 6/25/16 6:59 PM, johnpierce wrote:
>>
>>> A person recently provided a link to a clean Wall Wart power supply he
>>> bought for his KX3.  I have searched for it and cannot find it. Could
>>> someone please repost the link?
>>>
>>>
>>> John Pierce
>>>
>>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to gio.fl...@gmail.com
>



-- 
John Flynn
Tallahassee, Florida
USA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] Wall Wart for KX3

[Lynn W. Taylor, WB6UUT]

I've got one.  Works well.

On 6/25/2016 7:57 PM, Phil Wheeler wrote:
This one 
https://proaudioeng.com/products/pae-kx33-low-rfi-ac-power-supply/


73, Phil W7OX

On 6/25/16 6:59 PM, johnpierce wrote:

A person recently provided a link to a clean Wall Wart power supply he
bought for his KX3.  I have searched for it and cannot find it. Could
someone please repost the link?


John Pierce


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] Wall Wart for KX3

[Phil Wheeler]

This one 
https://proaudioeng.com/products/pae-kx33-low-rfi-ac-power-supply/


73, Phil W7OX

On 6/25/16 6:59 PM, johnpierce wrote:

A person recently provided a link to a clean Wall Wart power supply he
bought for his KX3.  I have searched for it and cannot find it.  Could
someone please repost the link?

  


John Pierce


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] Wall wart for KX3

[hawley, charles j jr]

I use this one...14 volts, 4 amps. The plug on it fits the KX3 and the open ckt 
voltage is 14 vdc exactly.

http://www.ebay.com/itm/KSAS065-65W-Adapter-power-supply-Output-14Vdc-4A-2-1mm-plug-NEW-FREE-SHIP-/261135859531?pt=US_Monitor_Power_Supplieshash=item3ccce8ff4b

Chuck, KE9UW
Lionel Trains, TCA, LCCA, LRRC
aka Jack, BMW Motorcycles BMWMOA #224


From: elecraft-boun...@mailman.qth.net [elecraft-boun...@mailman.qth.net] on 
behalf of Ed Picha [n...@comcast.net]
Sent: Tuesday, December 18, 2012 8:17 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Wall wart for KX3

KX3 gurus:

Has anyone found a wall wart they like for the KX3?  Like most hams, I
have a big box of wall warts, and have tried several different 12 V
adaptors with the KX3.  They all worked ok for general operation, but I
noted that when I added the KXBC3 battery charger option to the KX3, I
really needed an honest 13.8 V or higher to fully charge the internal
batteries.  Most of the warts I tried had outputs less than 13V, and the
few that I found that could supply 13.8 V under load had voltages above
15 V with no load.   I didn't want to take a chance with these by
exceeding the KX3 upper voltage speceven for the short time that it
would take for the adaptor voltage to drop.

My KX3 current drain numbers are (all at 13.8 V):

receive, with backlight:  0.190 A
receive while charging batteries: 0.400 A
transmit, 5W: 1.04 A
transmit, 10W: 1.91 A

So, I guess the ideal adaptor would be capable of 2A at 13.8 V to
support running the radio with no (or fully discharged) batteries at
full power, and would not exceed 15 V with no load.  While I'm wishing,
it would also be smalland lightweight.

Any suggestions?

thanks, 73

ed N9EP
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Wall wart for KX3

[Jim Sheldon]

I have one from MPJA that puts out 12.0 volts @ 4 amps which, as it turns out, 
is not enough voltage to charge batteries in the KX3 using the internal charger 
so seeing this one I checked on it further and found a link to the 
manufacturer's spec sheet.  It looks pretty good.  The supply has over voltage 
and overcurrent protection, 4.1 amps @ 14 volts and the spec lists it 14.0-14.9 
volts so still within the KX3's safe range, especially if it puts out 14.0 like 
Chuck's does.  

Certainly cheap enough as well, $8.59 with free shipping.  (The MPJA supply was 
$12.95 plus shipping.) I did order one from eBay and I'll report back to the 
list after I get it and run some power/RFI tests on it.  From the Mfr. spec 
sheet, it has very low RF emissions and the output lead is Ferrite choked so 
hopefully it will be either extremely quiet or any RFI will be out of the ham 
bands.  Both of them are made in China (what isn't these days except for our 
favorite Elecraft gear?) however, the quality is very good on the MPJA box and 
from the pictures, the one from eBay is as well.  

On the MPJA supply, it was originally intended for a respirator used to treat 
Sleep Apnea so it is medical grade and extremely quiet RF wise.  I didn't 
find any noticeable birdies in any of the ham bands from it and planned to test 
it further when I saw this post. Hopefully this one on the auction site is just 
as quiet.  It is certainly a little cheaper than the one from MPJA and it will 
have enough voltage to operate the KX3 to it's full output as well as charge 
batteries.  The MPJA one will give 12 watts out, but it's just a bit wimpy in 
the voltage department for charging batteries.

Neither of these are really Wall Warts in the true sense of the words but 
certainly small and light enough to be considered extremely portable.

Jim - W0EB


 I use this one...14 volts, 4 amps. The plug on it fits the KX3 and
 the open ckt voltage is 14 vdc exactly.

 http://www.ebay.com/itm/KSAS065-65W-Adapter-power-supply-Output-
 14Vdc-4A-2-1mm-plug-NEW-FREE-SHIP-
 /261135859531?pt=US_Monitor_Power_Supplieshash=item3ccce8ff4b

 Chuck, KE9UW
 Lionel Trains, TCA, LCCA, LRRC
 aka Jack, BMW Motorcycles BMWMOA #224


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Wall wart for KX3

[Matthew Zilmer]

George has an excellent point (killing good radios), but be advised that the 
KX3 is designed to work from pure DC power (batteries) and doesn't tolerate 
power supply ripple and transients well.  So filtering of the DC is necessary 
as well as good regulation.  Most wall warts out of the box have neither.  This 
comes true in spades, in a mobile installation (see 
http://www.elecraft.com/manual/Rev-B1-1.6-KX3-Mobile-Owners.pdf for more on 
mobile installations and ops).  

My on the road AC supply is a MeanWell switcher.  It's got a few broad HF 
spurs.  I treated these as conducted emissions and used a Laird LFB174095 
ferrite core w/ 5 turns through it to suppress them.  There are still a few 
spurs being radiated, and even though they're broad they are also below the 
atmospheric noise level.  KX #6 only hears them with the antenna cable 
disconnected.

Matt Zilmer
Consultant - Product Management Dept.
Magellan Navigation / MiTAC Digital Corp.
Tel: (909) 394-6052
Cell: (909) 730-6552
In status quo voluntas non sufficit


-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of w2b...@aol.com
Sent: Wednesday, December 19, 2012 8:12 AM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] Wall wart for KX3

I bought several 18VDC ones and pried them open. There was enough room  
inside to add a regulator and extra filter cap. Used with other QRP rigs but  
never with a KX3. Yes mni wallwarts will kill a good radio!  72  George/W2BPI
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Wall wart for KX3

[Bert Craig]

What a great thread with loads of informative replies, some to questions I'd 
never even thought to ask. I'm sure there are others here silently gleaning 
from this thread as well. On behalf of all of us, thank you all. Take care 
es... 

Vy 73 de Bert 
WA2SI 

Sent from my android device.



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Wall wart for KX3

[Don Wilhelm]

Ed,

I for one would not trust any radio to a wall-wart power supply unless 
it stated on the label that it was regulated.


In most cases, the open circuit voltage will soar, and the KX3 maximum 
voltage is 15 volts.  Under the supply's rated load, the voltage will 
normally reduce to the voltage on the label, but there is usually a wide 
swing between no-load and full-load voltages.


I would suggest a real power supply which is rated at 4 amps or more for 
the KX3.


My own KX3 runs off an Astron 30 amp supply and is fused for 10 amps to 
protect the wire from any fault.


73,
Don W3FPR
On 12/18/2012 9:17 PM, Ed Picha wrote:

KX3 gurus:

Has anyone found a wall wart they like for the KX3?  Like most hams, I 
have a big box of wall warts, and have tried several different 12 V 
adaptors with the KX3.  They all worked ok for general operation, but 
I noted that when I added the KXBC3 battery charger option to the KX3, 
I really needed an honest 13.8 V or higher to fully charge the 
internal batteries.  Most of the warts I tried had outputs less than 
13V, and the few that I found that could supply 13.8 V under load had 
voltages above 15 V with no load.   I didn't want to take a chance 
with these by exceeding the KX3 upper voltage speceven for the short 
time that it would take for the adaptor voltage to drop.


My KX3 current drain numbers are (all at 13.8 V):

receive, with backlight:  0.190 A
receive while charging batteries: 0.400 A
transmit, 5W: 1.04 A
transmit, 10W: 1.91 A

So, I guess the ideal adaptor would be capable of 2A at 13.8 V to 
support running the radio with no (or fully discharged) batteries at 
full power, and would not exceed 15 V with no load.  While I'm 
wishing, it would also be smalland lightweight.


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Wall wart for KX3

[Christian AK4VV]

Enercell wallwart from Radio Shack is what I use and have been happy with
it.

http://www.radioshack.com/product/index.jsp?productId=3875404numProdsPerPage=60

73,
Christian
AK4VV
 On Dec 18, 2012 9:17 PM, Ed Picha n...@comcast.net wrote:

 KX3 gurus:

 Has anyone found a wall wart they like for the KX3?  Like most hams, I
 have a big box of wall warts, and have tried several different 12 V
 adaptors with the KX3.  They all worked ok for general operation, but I
 noted that when I added the KXBC3 battery charger option to the KX3, I
 really needed an honest 13.8 V or higher to fully charge the internal
 batteries.  Most of the warts I tried had outputs less than 13V, and the
 few that I found that could supply 13.8 V under load had voltages above 15
 V with no load.   I didn't want to take a chance with these by exceeding
 the KX3 upper voltage speceven for the short time that it would take for
 the adaptor voltage to drop.

 My KX3 current drain numbers are (all at 13.8 V):

 receive, with backlight:  0.190 A
 receive while charging batteries: 0.400 A
 transmit, 5W: 1.04 A
 transmit, 10W: 1.91 A

 So, I guess the ideal adaptor would be capable of 2A at 13.8 V to support
 running the radio with no (or fully discharged) batteries at full power,
 and would not exceed 15 V with no load.  While I'm wishing, it would also
 be smalland lightweight.

 Any suggestions?

 thanks, 73

 ed N9EP
 __**__**__
 Elecraft mailing list
 Home: 
 http://mailman.qth.net/**mailman/listinfo/elecrafthttp://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.**htmhttp://mailman.qth.net/mmfaq.htm
 Post: mailto:elecr...@mailman.qth.**net Elecraft@mailman.qth.net

 This list hosted by: http://www.qsl.net
 Please help support this email list: http://www.qsl.net/donate.html

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Wall wart for KX3

[Christian AK4VV]

Agree.  And an Astron RS-35M does the heavy lifting in my shack.  But a
little wallwart can go a long ways when the Astron isn't in reach.

73,
Christian
AK4VV
 On Dec 18, 2012 9:33 PM, Don Wilhelm w3...@embarqmail.com wrote:

 Ed,

 I for one would not trust any radio to a wall-wart power supply unless it
 stated on the label that it was regulated.

 In most cases, the open circuit voltage will soar, and the KX3 maximum
 voltage is 15 volts.  Under the supply's rated load, the voltage will
 normally reduce to the voltage on the label, but there is usually a wide
 swing between no-load and full-load voltages.

 I would suggest a real power supply which is rated at 4 amps or more for
 the KX3.

 My own KX3 runs off an Astron 30 amp supply and is fused for 10 amps to
 protect the wire from any fault.

 73,
 Don W3FPR
 On 12/18/2012 9:17 PM, Ed Picha wrote:

 KX3 gurus:

 Has anyone found a wall wart they like for the KX3?  Like most hams, I
 have a big box of wall warts, and have tried several different 12 V
 adaptors with the KX3.  They all worked ok for general operation, but I
 noted that when I added the KXBC3 battery charger option to the KX3, I
 really needed an honest 13.8 V or higher to fully charge the internal
 batteries.  Most of the warts I tried had outputs less than 13V, and the
 few that I found that could supply 13.8 V under load had voltages above 15
 V with no load.   I didn't want to take a chance with these by exceeding
 the KX3 upper voltage speceven for the short time that it would take for
 the adaptor voltage to drop.

 My KX3 current drain numbers are (all at 13.8 V):

 receive, with backlight:  0.190 A
 receive while charging batteries: 0.400 A
 transmit, 5W: 1.04 A
 transmit, 10W: 1.91 A

 So, I guess the ideal adaptor would be capable of 2A at 13.8 V to support
 running the radio with no (or fully discharged) batteries at full power,
 and would not exceed 15 V with no load.  While I'm wishing, it would also
 be smalland lightweight.


 __**__**__
 Elecraft mailing list
 Home: 
 http://mailman.qth.net/**mailman/listinfo/elecrafthttp://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.**htmhttp://mailman.qth.net/mmfaq.htm
 Post: mailto:elecr...@mailman.qth.**net Elecraft@mailman.qth.net

 This list hosted by: http://www.qsl.net
 Please help support this email list: http://www.qsl.net/donate.html

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Wall wart for KX3

[Bill Frantz]

I have been using the Jameco's #319920, 15V regulated wall-wart 
from http://www.jameco.com for my Small Wonder Labs PSK-20 as 
recommended by the kit's designer. I have not noticed any noise 
from the wall wart on 20 meters, the only band supported by the PSK-20.


The wall wart is rated at 18 watts. The PSK-20 has a 5 watt 
transmitter, so I don't know if it will run a KX3 at full power.


Because the rated voltage of the wall wart is the same as the 
KX3's maximum voltage, I would feel safer putting a diode in 
series with it to drop the voltage below the KX3's maximum. A 
single diode should give about 14.3 to 14.5 volts, within the 
KX3's specification and above the 13.8 volts needed for battery charging.


Cheers - Bill, AE6JV

On 12/18/12 at 6:17 PM, n...@comcast.net (Ed Picha) wrote:


Has anyone found a wall wart they like for the KX3?


---
Bill Frantz| gets() remains as a monument | Periwinkle
(408)356-8506  | to C's continuing support of | 16345 
Englewood Ave
www.pwpconsult.com | buffer overruns. | Los Gatos, 
CA 95032


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Wall wart for KX3

[Josh Lehan]

On 12/18/2012 06:17 PM, Ed Picha wrote:
 Has anyone found a wall wart they like for the KX3?  Like most hams, I
 have a big box of wall warts, and have tried several different 12 V
 adaptors with the KX3.  They all worked ok for general operation, but I
 noted that when I added the KXBC3 battery charger option to the KX3, I
 really needed an honest 13.8 V or higher to fully charge the internal
 batteries.  Most of the warts I tried had outputs less than 13V, and the
 few that I found that could supply 13.8 V under load had voltages above
 15 V with no load.   I didn't want to take a chance with these by
 exceeding the KX3 upper voltage speceven for the short time that it
 would take for the adaptor voltage to drop.

I had great luck with an old Toshiba laptop's power supply, that I
bought cheaply at a surplus shop (Halted Electronics).

It was from a time before laptop power supplies became smart, so
there's only 2 leads coming out of it: the DC power.  I cut off the old
Toshiba connector and just connected the bare wires to the supplied
Elecraft connector that also has bare wires, after testing it for
polarity.  The power supply gives a rock solid 15VDC, and it's rated up
to 3A.  My KX3 has no trouble at all when transmitting at the full 12W
power level.  However, I don't have the KXBC3 option, so don't know how
it performs with that.  The model number on it is Toshiba PA2450U.

It is small and lightweight.  It plugs into a 2-prong outlet, not a
3-prong, so I'm assuming it's not grounded.  The only problem is that it
might cause interference/noise.  However, I couldn't notice any.  Where
I'm at, there's a constant buzzing noise all over 40 meters, but the
noise blanker feature of the KX3 seems to solve that.  It's not caused
by this power supply, though: I unplugged it, but the noise remained.

Josh
K6JSH
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Wall wart for KX3

[Bill Harris]

I got a PS for a Respirator from MPJ.  A 12v 4.16 amp unit.  
Runs the K2. and KX3  
It's quite, RF wise.  Take a look at their web site and you will see 16 volt 
units available.
http://www.mpja.com/Desktop-Power-Supplies/products/475/

Ciao

de w7kxb-Bill . .

 Date: Tue, 18 Dec 2012 20:17:55 -0600
 From: n...@comcast.net
 To: elecraft@mailman.qth.net
 Subject: [Elecraft] Wall wart for KX3
 
 KX3 gurus:
 
 Has anyone found a wall wart they like for the KX3?  
  
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html